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SLI.V ·

Standard Lithium Expands Leadership Team with Appointment of General Counsel

Management Changes

Standard Lithium Expands Leadership Team with Appointment of General

Counsel

VANCOUVER, British Columbia, Aug. 18, 2025 -- Standard Lithium Ltd. (“Standard Lithium” or the “Company”) (TSXV: SLI)

(NYSE American: SLI), a leading near-commercial lithium company, is announcing the appointment of Michael Lutgring as

General Counsel, effective August 18, 2025.

“We are excited to have Michael join our senior leadership team,” said David Park, Chief Executive Officer and Director of

Standard Lithium. “Michael’s deep and wide-ranging experience will be critical as we strengthen our capabilities and bring

further expertise in-house as we continue our growth and development as a public company.”

Mr. Lutgring brings over two decades of legal and strategic advisory experience across corporate law, regulatory compliance

and commercial transactions. Prior to joining Standard Lithium, Mr. Lutgring served as Vice President and Deputy General

Counsel at Albemarle Corporation, where he led legal support for global supply chain operations, manufacturing, engineering

and corporate functions including human resources, information technology and risk management. Mr. Lutgring played a

pivotal role in major corporate initiatives, including the $6.2 billion acquisition of Rockwood Holdings to enter the lithium

business, as well as the $3.2 billion divestiture of Chemetall Surface Treatment to BASF. Prior to Albemarle, Mr. Lutgring held

senior legal roles at Amedisys, Inc., and practiced with respected law firms, advising clients on mergers and acquisitions,

securities and governance matters. He is recognized for his ability to navigate complex regulatory environments and align legal

strategy with business objectives.

About Standard Lithium Ltd.

Standard Lithium is a leading near-commercial lithium development company focused on the sustainable development of a

portfolio of large, high-grade lithium-brine properties in the United States. The Company prioritizes projects characterized by

high-grade resources, robust infrastructure, skilled labor, and streamlined permitting. Standard Lithium aims to achieve

sustainable, commercial-scale lithium production via the application of a scalable and fully integrated Direct Lithium Extraction

and purification process. The Company’s flagship projects are located in the Smackover Formation, a world-class lithium brine

asset, focused in Arkansas and Texas. In partnership with global energy leader Equinor ASA, Standard Lithium is advancing

the South West Arkansas project, a greenfield project located in southern Arkansas, and actively exploring promising lithium

brine prospects in East Texas.

Standard Lithium trades on both the TSX Venture Exchange and the NYSE American under the symbol “SLI”. Please visit the

Company’s website at www.standardlithium.com.

Investor Inquiries

Dan Rosen

Standard Lithium Ltd.

+1 604 409 8154

[email protected]

Media Inquiries

[email protected]

X: @standardlithium

LinkedIn: https://www.linkedin.com/company/standard-lithium/

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture

Exchange) accepts responsibility for the adequacy or accuracy of this release. This news release may contain certain

“Forward-Looking Statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and

applicable Canadian securities laws. When used in this news release, the words “anticipate”, “believe”, “estimate”, “expect”,

“target, “plan”, “forecast”, “may”, “schedule” and other similar words or expressions identify forward-looking statements or

information. These forward-looking statements or information may relate to intended development timelines, future prices of

commodities, accuracy of mineral or resource exploration activity, reserves or resources, regulatory or government

requirements or approvals, the reliability of third party information, continued access to mineral properties or infrastructure,

fluctuations in the market for lithium and its derivatives, changes in exploration costs and government regulation in Canada

and the United States, and other factors or information. Such statements represent the Company’s current views with respect

to future events and are necessarily based upon a number of assumptions and estimates that, while considered reasonable

by the Company, are inherently subject to significant business, economic, competitive, political and social risks,

contingencies and uncertainties. Many factors, both known and unknown, could cause results, performance or achievements

to be materially different from the results, performance or achievements that are or may be expressed or implied by such

forward-looking statements. The Company does not intend, and does not assume any obligation, to update these forward-

looking statements or information to reflect changes in assumptions or changes in circumstances or any other events

affecting such statements and information other than as required by applicable laws, rules and regulations.